<template>
    <div class="tab-bar-item" @click="itemClick">
      <div v-if="!isActive">
        <slot name="item-icon"></slot>
      </div>
      <div v-else>
        <slot name="item-icon-active"></slot>
      </div>
        <div :style="activeStyle">
          <slot name="item-text"></slot>
        </div>
    </div>
</template>

<script>
export default {
  name: 'TabBar',
  props: {
    path: String,
    activeColor: {
      type: String,
      default: 'red'
    }
  },
  data(){
    return{
      // isAactive: true
    }
  },
  computed: {
    isActive(){
      // 判断当前路由是否包含,不包含则返回-1
      return this.$route.path.indexOf(this.path) !== -1
    },
    activeStyle(){
      return this.isActive ? {color: this.activeColor} : {}
    }
  },
  methods: {
    itemClick(){
      this.$router.replace(this.path).catch(err=>{
        console.log('路由重复');
      });
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>

  .tab-bar-item{
    flex: 1;
    text-align: center;
    height: 49px;

    box-shadow: 0 -1px 1px rgba(100,100,100,.1);
    font-size: 14px;
  }
  .tab-bar-item img{
    width: 24px;
    height: 24px;
    margin-top: 3px;
    vertical-align: middle;
  }
</style>
